#include <iostream>
#include <iomanip>
#include <cmath>

using namespace std;

int main_0005()
{
    float r = 0.0;
    float x = 0.0;
    float p = 0.0;
    cin >> r >> x >> p;
    cout << fixed << setprecision(2) << x *pow((100 + r) / 100, p);
    return 0;
}
